Abstract: Objective：To explore the clinical effect of Yi Guan in the treatment of children with tonsillitis(windheat invading lung type).Methods：A total of 60 children with tonsillitis (wind-heat invading lung type) were selected and randomly divided into observation group and control group with 30 cases in each group. The control group was treated with conventional western medicine, and the observation group was treated with Yi Guan adjuvant therapy on the basis of conventional western medicine. Both groups were treated for a course of 7 days. The clinical efficacy of the two groups was observed. Compare the following items between the two groups before and after treatment: the total score of TCM syndrome, the improvement score of sore throat and tonsil enlargement, and the time of body temperature, sore throat and abscess to be relieved.Results：The total effective rate of the observation group was better than that of the control group, and the difference was statistically significant(P<0.05). After treatment, the total TCM syndrome score, improvement score of sore throat, and improvement score of tonsil enlargement in the observation group were lower than those in the control group, with statistical difference(P<0.05). The recovery time of body temperature, the relief time of sore throat and the subsidence time of pus in the observation group were all shorter than those in the control group, and the differences were statistically significant（P＜0.05）.Conclusion：The clinical application of Yi Guan as an adjutant treatment for children with tonsillitis(wind-heat invading lung type) has significant effect and can be popularized.

Key words: Tonsillitis, Wind-heat invading lung type, Yi Guan